AD694 Datasheet, PDF (2/16 Pages) Analog Devices – 4–20 mA Transmitter

AD694–SPECIFICATIONS (@ +25؇C, R_L = 250 ⍀, and V_S = +24 V, unless otherwise noted.)
Model
AD694JN/AQ/AR
Min
Typ
Max
AD694BQ/BR
Min Typ
Max
Unit
INPUT CHARACTERISTICS
Input Voltage Range
Input Bias Current
Either Input, T_MIN to T_MAX
Offset Current, T_MIN to T_MAX
Offset Current Drift
Input Impedance
–0.2
V_S –2.0 V V_S –2.5 V –0.2
V_S –2.0 V V_S –2.5 V V
1.5
5
1.5
5
nA
± 0.1
؎1
± 0.1
؎1
nA
± 1.0
± 5.0
± 1.0
± 5.0 pA/°C
5
5
MΩ
OUTPUT CHARACTERISTICS
Operating Current Range
Specified Performance
Output Voltage Compliance
Output Impedance, 4–20 mA
Current Limit (@ 2 × FS Overdrive
Slew Rate
SPAN AND ZERO ACCURACY¹
4 mA Offset Error @ 0 V Input²
Error from 4.000 mA, 4 mA On
Error from 0.000 mA, 4 mA Off
T_MIN to T_MAX
vs. Supply (2 V Span/10 V Span)
Trim Range, 4 mA Zero
Span
Nominal Transfer Function
Input FS = 2 V
Input FS = 10 V
Transfer Function Error from Nom,
Input FS = 2 V, 10 V
T_MIN to T_MAX
vs. Supply
Nonlinearity³
4 mA On: Max Pin 9 Voltage
4 mA Off: Min Pin 9 Voltage
0
4
V_S –36 V
40.0
50.0
24
1.3
23
20
V_S –2 V
44
0
4
V_S –36 V
40.0 50.0
24
1.3
23
20
V_S 2 V
44
mA
mA
V
MΩ
mA
mA/µs
± 10
؎20
±5
؎10
µA
0
+10
+20
0
+5
+10
µA
± 10
؎40
±5
؎20
µA
0.3/0.05 0.8/0.4
0.3/0.05 0.8/0.4 µA/V
2.0
4.8
2.0
4.8
mA
8.0
8.0
mA/V
1.6
1.6
mA/V
± 0.1
؎0.3
± 0.05 ؎0.15 % of Span
± 0.002 ± 0.005
± 0.001 ؎0.0025 % of Span/°C
± 0.001 ؎0.005
± 0.001 ؎0.005 % of Span/V
± 0.005 ؎0.015
± 0.001 ؎0.005 % of Span
0.8
0.8
V
3.0
2.5
3.0
2.5
V
VOLTAGE REFERENCE
Output Voltage: 10 V Reference
Output Voltage: 2 V Reference
T_MIN to T_MAX4
vs. Load, V_REF = 2 V, 10 V
vs. Supply, V_REF = 2 V, 10 V
Output Current
Source
Sink
9.960
1.992
5
10.000
2.000
30
0.15
± 0.001
0.2
10.040
2.008
50
0.50
؎0.005
9.980
1.996
10.000
2.000
20
0.15
± 0.001
10.020
2.004
30
0.50
؎0.005
V
V
ppm/°C
mV/mA
%/V
5
mA
0.2
mA
ALARM CHARACTERISTICS
V_CE(SAT) @ 2.5 mA
Leakage Current
Alarm Pin Current (Pin 10)
0.35
؎1
20
0.35
V
؎1
µA
20
mA
POWER REQUIREMENTS
Specified Performance
Operating Range
2 V FS, V_REF = 2 V
2 V, 10 V FS, V_REF = 2 V, 10 V
Quiescent Current, 4 mA Off
24
4.5
12.5
1.5
24
36
4.5
36
12.5
2.0
1.5
V
36
V
36
V
2.0
mA
TEMPERATURE RANGE
Specified Performance⁵ AD694AQ/BQ/AR/BR –40
AD694JN
0
Operating
AD694AQ/BQ/AR/BR –55
AD694JN
–40
+85
–40
+70
0
+125 –55
+85
–40
+85
°C
+70
°C
+125 °C
+85
°C
–2–
REV. B